You can spraypaint the fabric to khaki. After three years, the duplicolor spray paint is holding.
http://www.rubiconownersforum.com/phpbb3/viewtopic.php?f=39&t=36715&hilit=spray+paint
http://www.rubiconownersforum.com/phpbb3/viewtopic.php?f=39&t=36715&hilit=spray+paint